/Engine/Source/Developer/ToolWidgets/Public/SSearchableComboBox.h
typedef TSlateDelegates< [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FString](API\Runtime\Core\Containers\FString) > >::[FOnSelectionChanged](API\Developer\ToolWidgets\SSearchableComboBox\FOnSelectionChanged) FOnSelectionChanged